30
TROUBLESHOOTING
ERROR MESSAGES
Over Range
If the message OVERRANGE is displayed when scanning a sample, the
sample may be over range or under range. If the sample is over range the
sample should be diluted and tested again (see Sample Dilution Techniques
and Volumetric Measurements, page 26).
If overrange is displayed, press
ENTER
to continue testing on diluted
samples.
Note: After pressing
ENTER
, the
overrange cncentration will be
displayed. This concentration is an
approximation only
.
081 Phosphate LR
Overrange
<Enter> continue
Scan Blank
Scan Sample
12:00:00 001/500
CALIBRATION
As with all pre-calibrated meters, it is highly recommended, even if not
required by regulations, that the user periodically verify the performance of
the meter by running standards with a predetermined concentration. Results
outside of specifi cation are an indication that the meter needs to be adjusted.
This can be done following the user calibration described on page 10. If the
user calibration fails to properly adjust the meter then the meter should be
returned to LaMotte Company for recalibration. (See page 21).
STRAY LIGHT
The colorimeter should have no problems with stray light. Make sure that the
sample compartment lid is always fully closed.
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